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Nandrolone Phenylpropionate (NPP)

History: The close cousin of Deca Durabolin, NPP has not seen as much success within the pharmaceutical market as its older brother. This is not due to a perceived lack of effectiveness, but more to its need to be administered on a frequent injection schedule. Traditionally, prescriptions requiring regular intramuscular injections have been avoided, as they decrease patient compliance and in turn, lower profits. With Deca maintaining blood levels of the drug for a much longer period of time, pharmaceutical companies viewed this as a decisive advantage, which is why so few prescription versions of NPP have been produced over the years. About a decade ago, UGL’s began to offer NPP to the public for the first time and before long, it started to approach deca in popularity. At this point in time, a case can be made that NPP has become the most popular version of nandrolone on the market.

Method of Administration: NPP is administered in injectable form.

Steroid Class: NPP belongs to the 19-nor family of steroids.

Primary Use: NPP’s calling card is its ability to build mass & strength without initiating severe androgenic side effects. Sure, one could choose to skip NPP altogether and instead blast large dosages of testosterone in their pursuit of muscle mass…and save money doing it…but for the many individuals who need to consider the appearance of their hair and skin, that course of action in not an option. Enter NPP. Nandrolone can be used in place of testosterone (although a replacement dose of test is wise, in order to avoid sexual dysfunction), permitting the user to attain a formidable degree of muscle mass…and save their hair and skin while doing it. In fact, many people claim that NPP is the more effective muscle-builder, when compared on a mg to mg basis. Only experience can provide you with that answer, as personal response to AAS can vary widely. Unlike testosterone, which often leads to mental and/or emotional changes, NPP is typically neutral in this regard, which again, can either be viewed as an advantage or disadvantage depending on one’s goals. When trying to determine whether you should include Deca or NPP in your next cycle, there are 4 primary factors you will need to evaluate when making your decision. They are money, water retention, sexual dysfunction, and injection frequency. Deca is no doubt the more cost-effective option, as a 2.5 gram vial of Deca will typically cost about as much as a 1 gram vial of NPP. Deca also has the advantage of a less frequent injection frequency. However, NPP does not cause nearly as much water retention, nor is it as prone to cause sexual dysfunction at equivalent dosages. Aside from these differentiating characteristics, they are very similar in nature.

Anabolic-Androgenic Ratio: 125:37

Aromatizable: Yes. NPP aromatizes, but only to a small degree; about 1/5th that of testosterone.

Progestagenic Activity: Yes.

Methylated: No.

Standard Dosing Range and Cycle Length: NPP is commonly dosed between 300-1,000 mg per week for a period of 8-16 weeks in length. If one is using NPP solely for the alleviation of joint discomfort, a dose of 200-300 mg per week will usually suffice.

Frequency of Administration: NPP is normally injected every other day to 3X per week.